A numeric screen code can be set to lock the home screen to protect it from tampering.

Two lock schemas are available: screen lock and public area lock. Use the former to lock the screen from any operation. Use the latter to lock the screen in public area where it is possible to change room temperature setpoint temporarily and restore the energy-saving mode if the leaf on the screen turns red.

Apart from using the screen code to unlock the screen, the administrator password (if set) can be used to unlock the screen.

Create a screen lock code

  1. From the Home screen, tap , then tap .
  1. Tap , tap and then tap “Activate”.
  1. Tap "Screen lock" or "Public area lock" as needed.
  1. Enter a code consisting of at least six numbers, and then tap “OK”.
  1. Tap “OK” again to confirm.

Change to another lock schema

  1. If the current lock schema is "Screen lock", tap any area on the screen, enter the screen lock code directly and then tap “OK”. If the current lock schema is "Public area lock", tap from the screen and then enter the set code.
  1. From the Home screen, tap , then tap .
  1. On the “Settings” page, tap .
  1. Tap , and then change to the other lock schema as needed.
  • The newly-selected lock schema is highlighted with a tick mark.

Changing lock schema doesn't change the screen lock code.

Unlock the home screen

  • On the Home screen, enter the screen lock code directly and then tap “OK”.
  • If an administration password has been set, tap the question mark on the screen, and then tap “Log in as administrator”.

NOTE: There is no limit of number of attempts to enter the numeric code. In case the screen lock is lost, the administrator password (if set) can be used to unlock the screen. For more information, see What should I do if I forget the screen lock code?

Modify a screen lock password

  1. On the “Settings” page, tap .
  1. Tap and then tap “Change”. Specify a new numeric lock of six numbers, and then tap “OK”.
  1. Tap “OK” to confirm.

Remove a screen lock password

  1. On the “Settings” page, tap .
  1. Tap , tap “Deactivate”, and then tap “OK” to confirm.